Yeah, I didn't like any pairings in Avatar really.
I think I would have prefered Zutara over Kataang. Although with how the series was played out then Zuko and Katara getting in a relationship would have to be fast and very close to the final.
I don't like pairings that spane across the entire series when you know they are going to end up together from episode 1 and they keep dancing around the issue giving that specific pairing their own episodes which could have been used for some other story... like the friendship between Sokka and Aang... :/ (I'm being childish again XD)
Reminds me of Robin/Starfire from the Teen Titans animated series. XD